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x68k.cpp: Hook up SCSI DMA channel

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This commit is contained in:
AJR 2023-05-10 23:16:47 -04:00
parent 106e128bfd
commit 12cfccb6cf
2 changed files with 9 additions and 4 deletions
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11
src/mame/sharp/x68k.cpp
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@ -979,9 +979,10 @@ WRITE_LINE_MEMBER(x68ksupr_state::scsi_irq)
}
}
WRITE_LINE_MEMBER(x68ksupr_state::scsi_drq)
void x68ksupr_state::scsi_unknown_w(uint8_t data)
{
// TODO
// Documentation claims SSTS register is read-only, but x68030 boot code writes #$05 to this address anyway.
// Is this an undocumented MB89352 feature, an ASIC register, an original code bug or a bad dump?
}
void x68k_state::x68k_base_map(address_map &map)
@ -1051,6 +1052,7 @@ void x68030_state::x68030_map(address_map &map)
map(0xe92000, 0xe92003).r(m_okim6258, FUNC(okim6258_device::status_r)).umask32(0x00ff00ff).w(FUNC(x68030_state::adpcm_w)).umask32(0x00ff00ff);
map(0xe96020, 0xe9603f).m(m_scsictrl, FUNC(mb89352_device::map)).umask32(0x00ff00ff);
map(0xe9602d, 0xe9602d).w(FUNC(x68030_state::scsi_unknown_w));
map(0xea0000, 0xea1fff).noprw();//.rw(FUNC(x68030_state::exp_r), FUNC(x68030_state::exp_w)); // external SCSI ROM and controller
map(0xeafa80, 0xeafa8b).rw(FUNC(x68030_state::areaset_r), FUNC(x68030_state::enh_areaset_w));
map(0xfc0000, 0xfdffff).rom(); // internal SCSI ROM
@ -1385,9 +1387,12 @@ void x68ksupr_state::x68ksupr_base(machine_config &config)
spc.set_clock(40_MHz_XTAL / 8);
spc.out_irq_callback().set(*this, FUNC(x68ksupr_state::scsi_irq));
spc.out_dreq_callback().set(*this, FUNC(x68ksupr_state::scsi_drq));
spc.out_dreq_callback().set(m_hd63450, FUNC(hd63450_device::drq1_w));
});
m_hd63450->dma_read<1>().set("scsi:7:spc", FUNC(mb89352_device::dma_r));
m_hd63450->dma_write<1>().set("scsi:7:spc", FUNC(mb89352_device::dma_w));
VICON(config, m_crtc, 38.86363_MHz_XTAL);
m_crtc->set_clock_69m(69.55199_MHz_XTAL);
m_crtc->set_screen("screen");

2
src/mame/sharp/x68k.h
View File

@ -321,7 +321,7 @@ public:
protected:
DECLARE_WRITE_LINE_MEMBER(scsi_irq);
DECLARE_WRITE_LINE_MEMBER(scsi_drq);
void scsi_unknown_w(uint8_t data);
required_device<mb89352_device> m_scsictrl;